If you are going winch, then have you looked in Warn? They also have those portable compressors.

If you want speed, then you can't beat the York that I have. That electric crap does not even come close. If you don't want your A/C (which I doubt) you can also easily turn your stock A/C compressor into you pump.

I have a 3 gallon tank and a Viair 380 and it likes to run right up to 200 psi, but it is so slow to fill up. To fill a 32" tire or 4 will require more than just a large tank, that kind of volume without the compressor kicking on or running will be hard to do. A good duty cycle is important and quality compressor are key.